LTC4302CMS-1#TRPBF

Product Overview

Category

The LTC4302CMS-1#TRPBF belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for bus buffering and level-shifting applications in various electronic systems.

Characteristics

• Bus Buffering: The LTC4302CMS-1#TRPBF provides bidirectional buffering between two I2C buses, allowing them to operate at different voltage levels.
• Level-Shifting: It also facilitates level shifting between different logic voltage domains, ensuring compatibility between devices with varying voltage requirements.
• High-Speed Operation: The IC supports high-speed I2C communication up to 400kHz.
• Low Quiescent Current: It features low quiescent current consumption, making it suitable for power-sensitive applications.
• ESD Protection: The LTC4302CMS-1#TRPBF offers built-in electrostatic discharge (ESD) protection, safeguarding the connected devices from potential damage.

Package and Quantity

The LTC4302CMS-1#TRPBF is available in a miniature 10-lead MSOP package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Maximum I2C Bus Voltage: 6V
• Quiescent Current: 0.8μA (typical)
• Maximum Data Rate: 400kHz

Pin Configuration

The LTC4302CMS-1#TRPBF has a total of 10 pins arranged as follows:

```

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| | --| VCC SDA |-- --| GND SCL |-- --| A1 AD0 |-- --| A0 AD1 |-- |___________| ```

• VCC: Power supply pin
• GND: Ground pin
• SDA: Serial Data line for I2C communication
• SCL: Serial Clock line for I2C communication
• A1, A0: Address selection pins
• AD0, AD1: Level-shifting control pins

Functional Features

1. Bidirectional Buffering: The LTC4302CMS-1#TRPBF enables bidirectional buffering between two I2C buses, allowing them to operate at different voltage levels.
2. Level Shifting: It provides level shifting capability, ensuring compatibility between devices with varying logic voltage requirements.
3. Automatic Bus Disconnect: The IC automatically disconnects the buses when idle, preventing bus contention and reducing power consumption.
4. ESD Protection: Built-in electrostatic discharge protection guards against potential damage to connected devices.
5. High-Speed Operation: The IC supports high-speed I2C communication up to 400kHz.

Advantages and Disadvantages

Advantages

• Enables interfacing between I2C buses operating at different voltage levels.
• Provides level shifting functionality for devices with varying logic voltage requirements.
• Low quiescent current consumption makes it suitable for power-sensitive applications.
• Offers built-in ESD protection for enhanced reliability.
• Supports high-speed I2C communication.

Disadvantages

• Limited to I2C bus applications and may not be suitable for other communication protocols.
• Requires careful consideration of address selection and level-shifting control pins.

Working Principles

The LTC4302CMS-1#TRPBF operates by buffering and level-shifting the signals between two I2C buses. It utilizes a bidirectional voltage translator to ensure proper signal transfer between the buses operating at different voltage levels. The IC automatically disconnects the buses when they are idle, preventing bus contention and reducing power consumption.

Application Field Plans

The LTC4302CMS-1#TRPBF finds applications in various electronic systems that require interfacing between I2C buses operating at different voltage levels. Some potential application fields include:

1. Industrial Control Systems: Used for level shifting and buffering in industrial automation systems employing I2C communication.
2. Consumer Electronics: Enables compatibility between devices with varying logic voltage requirements, such as smartphones, tablets, and home appliances.
3. Automotive Electronics: Facilitates communication between different voltage domains in automotive control modules utilizing I2C protocols.
4. Medical Devices: Provides level shifting capability for medical equipment utilizing I2C communication, ensuring compatibility between different voltage levels.

Alternative Models

1. LTC4316: Similar to LTC4302CMS-1#TRPBF, but with additional features like hot-swappable I2C bus pins and adjustable rise time control.
2. PCA9306: A comparable bidirectional I2C bus voltage level translator from NXP Semiconductors.
3. TCA9517: Another alternative offering level shifting and buffering functionality for I2C buses